<template>
    <div class="list" ref="wrapper">
        <div>
             <div class="area">
                <div class="title border-topbottom">当前城市</div>
                <div class="button-list">
                    <div class="button-wrapper">
                        <div class="button">
                            <!-- {{this.$store.state.city}} -->
                            {{this.currentCity}}
                        </div>
                    </div>
                </div>
             </div>
             <div class="area">
                <div class="title border-topbottom">热门城市</div>
                <div class="button-list">
                    <div class="button-wrapper"
                    v-for="item of hot"
                    v-bind:key="item.id"
                    v-on:click="handleCityClick(item.name)">
                        <div class="button">{{item.name}}</div>
                    </div>
                </div>
             </div>
             <div class="area" v-for="(item, key) of cities"
              v-bind:key="key" v-bind:ref="key">
                  <div class="title border-topbottom">{{key}}</div>
                  <div class="item-list">
                      <div class="item border-bottom"
                      v-for="innerItem of item"
                      v-bind:key="innerItem.id"
                      v-on:click="handleCityClick(innerItem.name)">
                        {{innerItem.name}}
                      </div>
                  </div>
             </div>
        </div>
    </div>
</template>

<script>
import Bscroll from 'better-scroll'
import { mapState, mapMutations } from 'vuex'
export default {
  name: 'CityList',
  props: {
    hot: {
      type: Array
    },
    cities: {
      type: Object
    },
    letter: {
      type: String
    }
  },
  methods: {
    handleCityClick (city) {
      // this.$store.commit('changeCity', city)
      this.changeCity(city)
      this.$router.push('/')
    },
    ...mapMutations(['changeCity'])
  },
  computed: {
    ...mapState({
      currentCity: 'city'
    })
  },
  watch: {
    letter () {
      if (this.letter) {
        const ele = this.$refs[this.letter][0]
        // console.log(ele)
        this.scroll.scrollToElement(ele)
      }
      // console.log(this.letter)
    }
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.wrapper)
  }
}
</script>

<style lang="stylus" scoped>
  @import '~styles/varibles.styl'
  .border-topbottom
    &:before
      border-color #777
    &:after
      border-color #777
  .border-bottom
    &:before
      border-color #777
  .list
    overflow hidden
    position absolute
    top 2.43rem
    left 0
    right 0
    bottom 0
    // background red
    .title
      line-height: .54rem
      background: #eee
      padding-left: .2rem
      color: #666
      font-size: .26rem
      text-align left
    .button-list
      overflow hidden
      padding: .1rem .6rem .1rem .1rem
      .button-wrapper
        float: left
        width: 33.33%
        .button
          padding: .1rem 0
          text-align center
          margin .1rem
          border: .02rem solid #ccc
          border-radius .06rem
    .item-list
      .item
        line-height .76rem
        color #666
        padding-left .2rem
        text-align left
</style>
